Heilbronn CH 1990
Milan Srejber won the title, beating Alexander Mronz 7–6 4–6 7–6 in the final.
Main draw 32 players
- 1🇨🇿Martin StrelbaRound of 16 · Lost to Mark Kaplan
- 2🇨🇿Milan SrejberFinal · Champion
- 3🇩🇪Udo RiglewskiRound of 16 · Lost to Martin Sinner
- 4🇸🇪Thomas HogstedtRound of 32 · Lost to Henrik Holm
- 5🇩🇪Christian SaceanuSemifinals · Lost to Alexander Mronz
- 6🇺🇸Jeff TarangoSemifinals · Lost to Milan Srejber
- 7🇵🇹Nuno MarquesRound of 16 · Lost to Jorgen Windahl
- 8🇩🇪Alexander MronzFinal · Lost to Milan Srejber
- Q🇸🇪Jorgen WindahlQuarterfinals · Lost to Milan Srejber
- 🇿🇦Mark KaplanQuarterfinals · Lost to Alexander Mronz
- 🇩🇪Martin SinnerQuarterfinals · Lost to Jeff Tarango
- 🇫🇷Olivier SoulesQuarterfinals · Lost to Christian Saceanu
- 🇺🇸Brian DeveningRound of 16 · Lost to Jeff Tarango
- 🇸🇪Henrik HolmRound of 16 · Lost to Olivier Soules
- 🇫🇮Olli RahnastoRound of 16 · Lost to Alexander Mronz
- Q🇨🇿Radek ZahrajRound of 16 · Lost to Milan Srejber
- 🇨🇿Richard VogelRound of 16 · Lost to Christian Saceanu
- Q🇨🇿David RiklRound of 32 · Lost to Alexander Mronz
- 🇿🇦Dean BothaRound of 32 · Lost to Mark Kaplan
- 🇩🇪Dirk LeppenRound of 32 · Lost to Radek Zahraj
- 🇩🇪Hans SchwaierRound of 32 · Lost to Martin Sinner
- 🇨🇿Jaroslav BulantRound of 32 · Lost to Christian Saceanu
- 🇨🇿Josef CihakRound of 32 · Lost to Brian Devening
- WCIRIMansour BahramiRound of 32 · Lost to Richard Vogel
- 🇭🇷Marko OstojaRound of 32 · Lost to Milan Srejber
- WC🇩🇪Milan PalmeRound of 32 · Lost to Olli Rahnasto
- WC🇩🇪Rudiger HaasRound of 32 · Lost to Nuno Marques
- 🇦🇺Russell BarlowRound of 32 · Lost to Jorgen Windahl
- 🇦🇹Stefan LochbihlerRound of 32 · Lost to Jeff Tarango
- 🇮🇹Stefano PescosolidoRound of 32 · Lost to Udo Riglewski
- Q🇫🇷Stephane GrenierRound of 32 · Lost to Olivier Soules
- 🇩🇪Torben TheineRound of 32 · Lost to Martin Strelba